I earlier had a installed Laravel in public_html, the login was with the example.com/login. but due to new requirement I had to move the Laravel files into the subfolder. Now the /var/www/html has mainly the Wordpress site which does get open successfully. When I open Laravel via http://example.com/larvel-sub-folder/public it opens up the login. When I enter credentials it redirects to http://example.com/do-login (Error 404).
Now which is the exact specific file url is to be changed, I tried to search for few solution but end up finding none of them.
Adjust the APP_URL key under the .env file, which should be under your Laravel root dir, to reflect the correct path to the Laravel site. If you have a .htaccess file handling the rewrite then you may have to edit that as well.
Under the .htaccess file you may have to adjust RewriteBase / to better reflect the subdir laravel is now in.
Also look too see if $redirectTo is set under your AuthController.php, if so then adjust to fit your needs if not you could try setting it to fit your needs, such as protected $redirectTo = '/larvel-sub-folder/';